A demonstration of area.defined.
Last active
July 21, 2019 15:47
-
-
Save mbostock/3035090 to your computer and use it in GitHub Desktop.
Area with Missing Data
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| license: gpl-3.0 | |
| redirect: https://observablehq.com/@d3/area-with-missing-data |
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| <!DOCTYPE html> | |
| <meta charset="utf-8"> | |
| <style> | |
| body { | |
| font: 10px sans-serif; | |
| } | |
| .axis path, | |
| .axis line { | |
| fill: none; | |
| stroke: #000; | |
| shape-rendering: crispEdges; | |
| } | |
| .area { | |
| fill: lightsteelblue; | |
| } | |
| .line { | |
| fill: none; | |
| stroke: steelblue; | |
| stroke-width: 1.5px; | |
| } | |
| .dot { | |
| fill: white; | |
| stroke: steelblue; | |
| stroke-width: 1.5px; | |
| } | |
| </style> | |
| <body> | |
| <script src="//d3js.org/d3.v4.0.0-alpha.15.min.js"></script> | |
| <script> | |
| var data = d3.range(40).map(function(i) { | |
| return i % 5 ? {x: i / 39, y: (Math.sin(i / 3) + 2) / 4} : null; | |
| }); | |
| var margin = {top: 40, right: 40, bottom: 40, left: 40}, | |
| width = 960 - margin.left - margin.right, | |
| height = 500 - margin.top - margin.bottom; | |
| var x = d3.scaleLinear() | |
| .range([0, width]); | |
| var y = d3.scaleLinear() | |
| .range([height, 0]); | |
| var line = d3.line() | |
| .defined(function(d) { return d; }) | |
| .x(function(d) { return x(d.x); }) | |
| .y(function(d) { return y(d.y); }); | |
| var area = d3.area() | |
| .defined(line.defined()) | |
| .x(line.x()) | |
| .y1(line.y()) | |
| .y0(y(0)); | |
| var svg = d3.select("body").append("svg") | |
| .datum(data) | |
| .attr("width", width + margin.left + margin.right) | |
| .attr("height", height + margin.top + margin.bottom) | |
| .append("g") | |
| .attr("transform", "translate(" + margin.left + "," + margin.top + ")"); | |
| svg.append("path") | |
| .attr("class", "area") | |
| .attr("d", area); | |
| svg.append("g") | |
| .attr("class", "x axis") | |
| .attr("transform", "translate(0," + height + ")") | |
| .call(d3.axisBottom(x)); | |
| svg.append("g") | |
| .attr("class", "y axis") | |
| .call(d3.axisLeft(y)); | |
| svg.append("path") | |
| .attr("class", "line") | |
| .attr("d", line); | |
| svg.selectAll(".dot") | |
| .data(data.filter(function(d) { return d; })) | |
| .enter().append("circle") | |
| .attr("class", "dot") | |
| .attr("cx", line.x()) | |
| .attr("cy", line.y()) | |
| .attr("r", 3.5); | |
| </script> |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment